Fix bug#127732 & bug#127792 the ukui-search do not quit while losing focus.

frontend/mainwindow.cpp

@@ -32,6 +32,7 @@
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 12, 0))
 #include <KWindowEffects>
 #include <KWindowSystem>
+
 #endif
 #include <QtX11Extras/QX11Info>
 #include "ukuistylehelper/ukuistylehelper.h"
@@ -81,11 +82,12 @@ MainWindow::MainWindow(QWidget *parent) :
     initConnections();
     initGsettings();
 
-    connect(KWindowSystem::self(), &KWindowSystem::activeWindowChanged, this,[&](WId activeWindowId){
-            if (activeWindowId != this->winId()) {
-                tryHideMainwindow();
-            }
-        });
+//    connect(KWindowSystem::self(), &KWindowSystem::activeWindowChanged, this,[&](WId activeWindowId){
+//        qDebug() << "activeWindowChanged!!!" << activeWindowId;
+//            if (activeWindowId != this->winId()) {
+//                tryHideMainwindow();
+//            }
+//        });
 
     //NEW_TODO, register plugins
 //    SearchPluginManager::getInstance()->registerPlugin(\\);
@@ -571,11 +573,21 @@ void MainWindow::paintEvent(QPaintEvent *event) {
 
 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 {
+    if (watched == this) {
+        //失焦退出
+        if (event->type() == QEvent::ActivationChange) {
+            if (QApplication::activeWindow() != this) {
+                tryHideMainwindow();
+                return true;
+            }
+        }
         //kwin alt+f4发出close事件, 需要在存在子窗口时屏蔽该事件
-    if ((watched == this) && (event->type() == QEvent::Close)) {
+        if (event->type() == QEvent::Close) {
             event->ignore();
             tryHideMainwindow();
             return true;
         }
+    }
+
     return QObject::eventFilter(watched, event);
 }